Conductive powder production equipment

Abstract

This application relates to a conductive powder production apparatus, comprising a tank, a thermocouple, and a constant-temperature reaction bath. The tank is externally jacketed, with a heat transfer medium inlet and outlet on the side wall of the jacket. The thermocouple is housed within the tank. The constant-temperature reaction bath is connected to the heat transfer medium inlet and outlet via pipelines and is electrically connected to the thermocouple. The constant-temperature reaction bath is used to maintain the temperature of the tank based on the temperature detected by the thermocouple. This conductive powder production apparatus improves the controllability of the reaction temperature, facilitating the preparation of conductive powders with stable particle size, uniform size, and excellent quality.

Description

Technical Field

[0001] This application relates to the field of conductive material production equipment technology, and in particular to a conductive powder production apparatus. Background Technology

[0002] With the rapid development of the electronics and information and new energy industries, the demand for new high-end functional metal materials is becoming increasingly urgent. Micron-sized copper powder, as a conductive powder, has wide applications in conductive inks, PCB circuits, electronic packaging materials, chemical catalysis, electrode materials, and photovoltaic conductive materials. With technological advancements, the market is placing higher demands on the particle size uniformity, purity, morphology controllability, and production cost of copper powder.

[0003] However, in related technologies, the reaction temperature controllability of conductive powder production equipment is poor. Temperature instability can adversely affect the production stability of conductive powder, leading to problems such as uneven particle size. Utility Model Content

[0004] Based on this, a conductive powder production apparatus is provided to solve the problem of how to improve the controllability of the reaction temperature.

[0005] This application provides a conductive powder production apparatus, comprising:

[0006] The tank body has a jacket on its exterior, and the side wall of the jacket has a heat medium inlet and a heat medium outlet.

[0007] Thermocouple, wherein the thermocouple is disposed inside the tank;

[0008] A constant-temperature reaction bath is connected to the heat medium inlet and the heat medium outlet via pipelines. The constant-temperature reaction bath is electrically connected to the thermocouple and is used to control the temperature of the tank based on the temperature detected by the thermocouple.

[0009] In one embodiment, the conductive powder production apparatus further includes a condensation reflux module and an atmospheric communication pipe. The condensation reflux module is disposed at the top of the tank, and one end of the atmospheric communication pipe is used to connect to the condensation reflux module, while the other end is used to connect to the outside atmosphere.

[0010] In one embodiment, the conductive powder production apparatus further includes a connecting pipeline, a three-way valve, a tail gas absorption tank, and a gas washing pipe. The condensation reflux module is connected to the three-way valve through the connecting pipeline. The gas washing pipe and the atmospheric communication pipe are both connected to the three-way valve. The end of the gas washing pipe away from the three-way valve extends below the liquid level of the gas washing liquid in the tail gas absorption tank.

[0011] In one embodiment, the condensation reflux module includes a condenser tube, a sensor, and an automatic regulating valve. The automatic regulating valve is disposed inside the condenser tube and is electrically connected to the sensor. The automatic regulating valve is used to open or close the passage through the condenser tube according to the temperature detected by the sensor.

[0012] In one embodiment, the conductive powder production apparatus further includes a stirring mechanism connected to the tank.

[0013] In one embodiment, the stirring mechanism includes a propeller blade, a transmission rod, and a stirring motor. The propeller blade is disposed inside the tank and is connected to the output end of the stirring motor via the transmission rod. The stirring motor is disposed at the top of the tank and is used to drive the propeller blade to rotate via the transmission rod.

[0014] In one embodiment, the stirring mechanism further includes a bottom scraper blade located inside the tank and connected to the transmission rod. The bottom scraper blade is used to rotate inside the tank under the drive of the transmission rod and to stir the material near the bottom wall of the tank.

[0015] In one embodiment, the bottom scraper blade includes a first blade portion and a second blade portion connected to both ends of the first blade portion. The first blade portion is arc-shaped, and the second blade portion extends spirally along the height direction of the tank.

[0016] In one embodiment, the conductive powder production apparatus further includes a pure water pipe, a solution material feed pipe, a water inlet head, and an atomizing nozzle. The atomizing nozzle and the water inlet head are both located inside the tank. The atomizing nozzle is connected to the solution material feed pipe, and the water inlet head is connected to the pure water pipe. Both the pure water pipe and the solution material feed pipe are equipped with metering pumps and electrically controlled valves.

[0017] In one embodiment, the top of the tank is provided with a feed inlet and a sealing cover plate provided at the feed inlet; and / or, the bottom of the tank is provided with a discharge outlet and a discharge electrically controlled valve, the discharge electrically controlled valve being provided at the discharge outlet and used to open or close the discharge outlet.

[0018] The aforementioned conductive powder production apparatus uses thermocouples inside the tank to detect the temperature of the material inside the tank. The constant-temperature reaction bath circulates heat medium to the internal space of the jacket according to the temperature detected by the thermocouples, which facilitates constant temperature control of the material inside the tank, thereby improving the controllability of the reaction temperature and making it easier to prepare conductive powder with stable particle size, uniform size and excellent quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a conductive powder production apparatus according to one embodiment of this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] 10. Tank body; 11. Jacket; 12. Heat medium inlet; 13. Heat medium outlet; 101. Feed inlet; 102. Sealing cover; 103. Discharge outlet; 104. Discharge electrical control valve; 20. Thermocouple; 30. Constant temperature reaction bath; 40. Condensation reflux module; 401. Atmospheric connection pipe; 402. Connecting pipe; 403. Three-way valve; 404. Tail gas absorption tank; 405. Gas washing pipe; 50. Stirring mechanism; 51. Propeller blade; 52. Drive rod; 53. Stirring motor; 54. Bottom scraper blade; 541. First blade section; 542. Second blade section; 60. Pure water pipe; 61. First metering pump; 62. First electrical control valve; 70. Solution material feed pipe; 71. Second metering pump; 72. Second electrical control valve; 80. Water inlet head; 90. Atomizing nozzle. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0025] The terms “vertical,” “horizontal,” “up,” “down,” “left,” “right,” and similar expressions are for illustrative purposes only and do not represent the only possible implementation.

[0026] It should be understood that the terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” and “horizontal,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] See Figure 1 As shown, one embodiment of this application provides a conductive powder production apparatus suitable for producing conductive powders. The conductive powders include, but are not limited to, copper powder or aluminum powder. It should be noted that the conductive powder production apparatus is capable of producing micron-sized copper powder.

[0029] Combination Figure 1 As shown, the conductive powder production apparatus includes a tank 10, a thermocouple 20, and a constant temperature reaction bath 30.

[0030] The tank body 10 is equipped with a jacket 11, and the side wall of the jacket 11 has a heat medium inlet 12 and a heat medium outlet 13. Both the heat medium inlet 12 and the heat medium outlet 13 are connected to the internal space of the jacket 11. The heat medium inlet 12 and the heat medium outlet 13 are each connected to a constant temperature reaction bath 30 through pipelines. In this way, heat medium is injected into the internal space of the jacket 11 through the heat medium inlet 12 using the constant temperature reaction bath 30, and the heat medium flowing out of the internal space of the jacket 11 is received through the heat medium outlet 13.

[0031] Thermocouple 20 is installed inside tank 10 and is used to detect the temperature of the material inside tank 10. Thermocouple 20 is electrically connected to constant temperature reaction bath 30, so that constant temperature reaction bath 30 can control the temperature of tank 10 according to the temperature detected by thermocouple 20, so that the material is at a stable reaction temperature.

[0032] In the above embodiment, the temperature of the material inside the tank 10 is detected by the thermocouple 20 inside the tank 10. The constant temperature reaction bath 30 circulates the heat medium to the internal space of the jacket 11 according to the temperature detected by the thermocouple 20, so as to facilitate constant temperature control of the material inside the tank 10, thereby improving the controllability of the reaction temperature and facilitating the preparation of conductive powder with stable particle size, uniform size and excellent quality.

[0033] The thermocouple 20 and the constant temperature reaction bath 30 can be electrically connected by wires or wirelessly connected by Bluetooth or Wi-Fi signals. As long as the constant temperature reaction bath 30 can obtain the temperature information detected by the thermocouple 20, it can control the temperature of the tank 10 according to the temperature detected by the thermocouple 20.

[0034] In some embodiments, the conductive powder production apparatus includes a thermometer sheath connected to and extending into the tank 10. A thermocouple 20 is disposed inside the thermometer sheath, thus providing protection for the thermocouple 20.

[0035] In some embodiments, the conductive powder production apparatus further includes a condensation reflux module 40 and an atmospheric connection pipe 401. The condensation reflux module 40 is disposed at the top of the tank 10. One end of the atmospheric connection pipe 401 is connected to the condensation reflux module 40, and the other end is connected to the outside atmosphere.

[0036] The conductive powder production apparatus also includes a connecting pipe 402, a three-way valve 403, a tail gas absorption tank 404, and a gas scrubbing pipe 405. The condensate reflux module 40 is connected to the three-way valve 403 via the connecting pipe 402. Both the gas scrubbing pipe 405 and the atmospheric connection pipe 401 are connected to the three-way valve 403. The end of the gas scrubbing pipe 405 furthest from the three-way valve 403 extends below the surface of the scrubbing liquid in the tail gas absorption tank 404.

[0037] The high-temperature waste gas generated by the reaction is condensed and refluxed by the condensation and reflux module 40, and then passed through the three-way valve 403 and the gas washing pipe 405 to the tail gas absorption tank 404 for gas washing liquid to remove pollutants and prevent air pollution.

[0038] In some embodiments, the condensation reflux module 40 includes a condenser tube, a sensor, and an automatic regulating valve. The automatic regulating valve is located inside the condenser tube and is electrically connected to the sensor. The automatic regulating valve is used to open or close the flow path through the condenser tube according to the temperature detected by the sensor, thereby maintaining a stable temperature of the cooling medium flowing through the spherical condenser tube. The condenser tube includes, but is not limited to, a spherical condenser tube.

[0039] Combination Figure 1As shown, the top of the tank 10 is provided with a feed inlet 101 and a sealing cover 102 located at the feed inlet 101. The sealing cover 102 is used to open or close the feed inlet 101. When it is necessary to add material into the tank 10, the sealing cover 102 can be opened. The sealing cover 102 and the tank 10 can be connected by a snap-fit ​​connection or a rotatable connection. The method of cooperation between the sealing cover 102 and the tank 10 is not limited here.

[0040] The bottom of the tank 10 is provided with a discharge port 103 and a discharge electrically controlled valve 104. The discharge electrically controlled valve 104 is located at the discharge port 103 and is used to open or close the discharge port 103. Understandably, when the discharge electrically controlled valve 104 opens the discharge port 103, the processed copper powder inside the tank 10 can be discharged from the discharge port 103; when the discharge electrically controlled valve 104 closes the discharge port 103, the material cannot be discharged from the tank 10 because the discharge port 103 is in the closed state.

[0041] The conductive powder production apparatus also includes a stirring mechanism 50, which is connected to the tank 10. The stirring mechanism 50 is used to stir the material inside the tank 10.

[0042] The stirring mechanism 50 includes a propeller blade 51, a transmission rod 52, and a stirring motor 53. The propeller blade 51 is disposed inside the tank body 10 and is connected to the output end of the stirring motor 53 via the transmission rod 52. The stirring motor 53 is disposed at the top of the tank body 10 and is used to drive the propeller blade 51 to rotate via the transmission rod 52, thereby causing the propeller blade 51 to stir the material inside the tank body 10 to facilitate uniform mixing of the material.

[0043] In some embodiments, the stirring mechanism 50 further includes a bottom scraper blade 54 located inside the tank 10 and connected to the drive rod 52. The bottom scraper blade 54 rotates within the tank 10 under the drive of the drive rod 52, stirring the material near the bottom wall of the tank 10. This ensures that the material at the bottom of the tank 10 is also stirred, further improving the uniformity of the material mixture.

[0044] The bottom-scraping impeller 54 includes a first impeller portion 541 and second impeller portions 542 connected to both ends of the first impeller portion 541. The first impeller portion 541 is arc-shaped to correspond to the shape of the bottom wall of the tank 10, thereby facilitating the stirring of materials near the bottom wall inside the tank 10. Since the second impeller portions 542 are provided at both ends of the first impeller portion 541, the materials near the bottom side wall of the tank 10 can be stirred using the second impeller portions 542 at both ends, reducing the probability of materials adhering to the bottom side wall of the tank 10, and further improving the uniformity of material stirring.

[0045] In some embodiments, the second blade portion 542 extends in a spiral shape along the height direction of the tank body 10. Thus, as the first blade portion 541 rotates within the tank body 10, this spiral-shaped second blade portion 542 can agitate the material near the bottom sidewall of the tank body 10 in the direction surrounding the drive rod 52. The spiral-shaped second blade can also cause a portion of the material to spiral along the height direction of the tank body 10, further improving the uniformity of material mixing.

[0046] In some embodiments, the conductive powder production apparatus further includes a pure water pipe 60 and a solution material inlet pipe 70. Both the pure water pipe 60 and the solution material inlet pipe 70 are connected to the tank 10. The pure water pipe 60 is used to inject pure water into the tank 10; the solution material inlet pipe 70 is used to inject a reducing agent solution into the tank 10. It should be noted that the reducing agent solution is used to reduce the solid material containing conductive metal added to the tank 10, thereby obtaining conductive powder.

[0047] In some embodiments, the conductive powder production apparatus further includes a water inlet pipe 80 and an atomizing nozzle 90. Both the water inlet pipe 80 and the atomizing nozzle 90 are located inside the tank 10. The atomizing nozzle 90 is connected to the solution material inlet pipe 70, enabling efficient material dispersion. The water inlet pipe 80 is connected to a pure water pipe 60.

[0048] Both the pure water pipe 60 and the solution material inlet pipe 70 are equipped with metering pumps and electrically controlled valves. For ease of description, the metering pump on the pure water pipe 60 is referred to as "first metering pump 61", and the electrically controlled valve on the pure water pipe 60 is referred to as "first electrically controlled valve 62"; correspondingly, the metering pump on the solution material inlet pipe 70 is referred to as "second metering pump 71", and the electrically controlled valve on the solution material inlet pipe 70 is referred to as "second electrically controlled valve 72".

[0049] For ease of understanding, the following will describe the process of using a conductive powder production apparatus of one embodiment in processing copper powder, but this does not mean that the process of using the conductive powder production apparatus of this application is limited to this.

[0050] In some embodiments, the process of producing copper powder using a conductive powder production device can be as follows: With the sealing cover 102 open, solid material is fed into the feed inlet 101, and the sealing cover 102 is closed. Then, the three-way valve 403 is opened to connect with the atmospheric connection pipe 401, the first electrically controlled valve 62 on the pure water pipe 60 is opened, and an appropriate amount of pure water is pumped in through the first metering pump 61 on the pure water pipe 60. After that, the first electrically controlled valve 62 is closed, and the three-way valve 403 is adjusted to connect with the gas washing pipe 405. The stirring motor 53 is then turned on, allowing it to operate at a suitable speed. The constant temperature reaction bath 30 is turned on, and after the temperature stabilizes, the second electrically controlled valve 72 and the second metering pump 71 on the solution material feed pipe 70 are opened successively, and an appropriate amount of reducing agent solution is added into the tank 10 through the atomizing nozzle 90. After the reaction is completed, the three-way valve 403 is adjusted to connect with the atmospheric connection pipe 401, and the discharge electrically controlled valve 104 is opened, allowing the copper powder to be discharged from the discharge port 103.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A conductive powder production apparatus, characterized in that, include: The tank body has a jacket on its exterior, and the side wall of the jacket has a heat medium inlet and a heat medium outlet. Thermocouple, wherein the thermocouple is disposed inside the tank; A constant-temperature reaction bath is connected to the heat medium inlet and the heat medium outlet via pipelines. The constant-temperature reaction bath is electrically connected to the thermocouple and is used to control the temperature of the tank based on the temperature detected by the thermocouple.

2. The conductive powder production apparatus according to claim 1, characterized in that, The conductive powder production device also includes a condensation reflux module and an atmospheric communication pipe. The condensation reflux module is located at the top of the tank, and one end of the atmospheric communication pipe is used to connect to the condensation reflux module, while the other end is used to connect to the outside atmosphere.

3. The conductive powder production apparatus according to claim 2, characterized in that, The conductive powder production device also includes a connecting pipeline, a three-way valve, a tail gas absorption tank, and a gas washing pipe. The condensation reflux module is connected to the three-way valve through the connecting pipeline. The gas washing pipe and the atmospheric communication pipe are both connected to the three-way valve. The end of the gas washing pipe away from the three-way valve extends below the liquid level of the gas washing liquid in the tail gas absorption tank.

4. The conductive powder production apparatus according to claim 2 or 3, characterized in that, The condensation reflux module includes a condenser tube, a sensor, and an automatic regulating valve. The automatic regulating valve is located inside the condenser tube and is electrically connected to the sensor. The automatic regulating valve is used to open or close the passage through the condenser tube according to the temperature detected by the sensor.

5. The conductive powder production apparatus according to claim 1, characterized in that, The conductive powder production device also includes a stirring mechanism, which is connected to the tank.

6. The conductive powder production apparatus according to claim 5, characterized in that, The stirring mechanism includes a propeller blade, a transmission rod, and a stirring motor. The propeller blade is disposed inside the tank and is connected to the output end of the stirring motor through the transmission rod. The stirring motor is disposed at the top of the tank and is used to drive the propeller blade to rotate via the transmission rod.

7. The conductive powder production apparatus according to claim 6, characterized in that, The stirring mechanism also includes a bottom scraper blade located inside the tank and connected to the transmission rod. The bottom scraper blade is used to rotate inside the tank under the drive of the transmission rod and to stir the material near the bottom wall of the tank.

8. The conductive powder production apparatus according to claim 7, characterized in that, The bottom scraper blade includes a first blade portion and a second blade portion connected to both ends of the first blade portion. The first blade portion is arc-shaped, and the second blade portion extends spirally along the height direction of the tank body.

9. The conductive powder production apparatus according to claim 1, characterized in that, The conductive powder production device further includes a pure water pipe, a solution material feed pipe, a water inlet head, and an atomizing nozzle. The atomizing nozzle and the water inlet head are both located inside the tank. The atomizing nozzle is connected to the solution material feed pipe, and the water inlet head is connected to the pure water pipe. Both the pure water pipe and the solution material feed pipe are equipped with metering pumps and electrically controlled valves.

10. The conductive powder production apparatus according to claim 1, characterized in that, The top of the tank is provided with a feed inlet and a sealing cover plate located at the feed inlet; and / or, the bottom of the tank is provided with a discharge outlet and a discharge electrically controlled valve, the discharge electrically controlled valve being located at the discharge outlet and used to open or close the discharge outlet.

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